Wheel rate is the amount of travel the wheel moves under bump and rebound (compression and expansion) during suspension loads. The original formula is from Fred Puhn's book on handling called "How to make your car handle".
where . where . If so I would say in terms of TLLTD you neglect the ride spring and calculate the roll spring in much the same way you calculate an ARB for roll stiffness. Converting from N.m / deg back to N/m wheel rate (the ARB in AC does use a 1 motion ratio and is in either N/m or N/mm depending on the setup) N.m becomes N via dividing by half the track (converting torque to force), deg becomes m by multiplying by 180/pi * track, so overall 10,000Nm * pi/(180*1.585^2) = 110N/m ARB. C s is the actual spring rate (N/mm), and s is the spring track (m). Don’t think you have to maintain a given cross weight percent number. Lifting wheels does also depend on the roll stiffness of the roll bars and coils spring rates as well but as most race cars are stiff enough to lift wheels it proves to be a good visual representation to remember which way the roll centres should be set up on your car.
divided by three to determine wheel rate ( two front springs and sway bar ) so we need wheel rate of 240 Wheel rate = (Length of A-arm divided into inside frame mount point to center of spring mounting point) squared times spring rate.
It will calculate the spring rate for solid and hallow sway bars. Wheel rates is similar to spring rates in essence, but measurements are taken at the wheel instead of at the suspension linkage of the springs.
Roll stiffness (independent suspension) = C w x t 2 x 0.8729 N/deg . A conventional anti-roll bar can be incorporated between the trailing arms to increase the body roll stiffness of the suspension or alternatively built-in anti-roll rubber blocks can be adopted (Fig. Sway Bar Rate Calculator Trying to get a rough idea of the spring rate of your sway bar? An anti-roll bar (roll bar, anti-sway bar, sway bar, stabilizer bar) is a part of many automobile suspensions that helps reduce the body roll of a vehicle during fast cornering or over road irregularities. Increasing the rear roll stiffness will also cause the same effect, so too is the need to increase the cross weight percent. During equal bump or rebound travel of each wheel the trailing arms swing about their front pivots. Roll Center Calculator Plus v3.6 and Circle Track Analyzer v3.6 work with and can calculate Wheel Rate of the front and REAR of vehicles.
C w is the spring rate at the wheel, i.e. Roll stiffness (beam axle) = C s x s 2 x 0.8729 N/deg. This is reacted by the roll stiffness (or roll rate), , of the car. Roll stiffness is defined as the resistance moment generated per unit of roll angle of the sprung mass, and it has SI units of Nm/rad.
wheel rate (N/mm), and t is the vehicle track (m).